Depressed !. Net Framework 3.0 is coming soon!

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• How. NET Framework 3.0 is associated with. NET Framework 2.0 and earlier versions
• . NET Framework 3.0 Service Policy
• . NET Framework future version Roadmap

Microsoft. NET Framework 3.0
Transferred from msdn: Deploy Microsoft. NET Framework 3.0 Part of content

Microsoft. NET Framework 3.0 (formerly winfx) is a new type of Windows hosting service.CodeProgramming Model. It builds applications based on the features of. NET Framework 2.0 and the new structure.ProgramThe perfect combination of technologies can provide eye-catching user visual experience, achieve seamless communication across technical boundaries, and support a wide range of business processes. Microsoft plans to use. NET Framework 3.0 as part of Windows Vista. Microsoft also provides. NET Framework in Windows XP Service Pack 2 and Windows Server 2003 Service Pack 1.

The following table lists several technologies included in. NET Framework 3.0.

Technology	Description
Windows Presentation Foundation (WPF, formerly codenamed "aveon ")	Provides classes for building next-generation smart client applications based on UIS, documents, and media.
Windows Communication Foundation (WCF, formerly named "Indigo ")	Provides a unified programming model and runtime for building service-oriented applications.
Windows Workflow Foundation (WF)	Provides programming models, engines, and tools to build applications that support workflows for business process modeling.
Windows cardspace (formerly "infocard ")	Simplify and improve online work security by using personal identity information.
Microsoft. NET Framework 2.0	Improves the efficiency of building windows and web-based applications.

All classes that represent new components (WPF, WF, WCF, and cardspace) belong to the system namespace .. The core classes of the. NET platform, such as the Common Language Runtime (CLR) and the base class library (BCL), are kept as is in. NET Framework 2.0.

Is a structure example of. NET Framework 3.0.

Figure 1.. NET Framework 3.0

How. NET Framework 3.0 is associated with. NET Framework 2.0 and earlier versions

. NET Framework 3.0 adds new technologies to become a superset of. NET Framework 2.0. You can think of. NET Framework 3.0 as an "additional" version of. NET Framework 2.0, which is a comprehensive revision of 2.0. (For example,. NET Framework 2.0 is an improved version of. NET Framework 1.0 .)

Because. NET Framework 3.0 is an additional version and uses the core runtime components of. NET Framework 2.0, it is completely backward compatible with earlier versions. Existing Applications Based on. NET Framework 2.0 can continue to run without any modification. Moreover, you can use the technology provided with. NET Framework 2.0 to ensure investment security.

If you are porting from. NET Framework 1.1 or 1.0 to. NET Framework 3.0, perform impact analysis and run compatibility tests before deployment. Although we have tried our best to make the. NET Framework Version compatible, we still find some incompatibility problems due to the increase in security and important features.

. NET Framework 3.0 Service Policy

Microsoft will continue to provide services for. NET Framework 2.0 in accordance with the standard support policies implemented on platforms that support. NET Framework 2.0. Users dependent on. NET Framework 2.0 can continue to use this version and upgrade the software after the software upgrade package is released.

All. NET Framework 3.0 components can run on platforms that support. NET Framework 3.0.

. NET Framework future version Roadmap

Generally, new versions of any. NET Framework provide backward compatibility with earlier versions in design. If a new version introduces disruptive changes due to security issues or other reasons, Microsoft will allow you to install the new version concurrently while retaining the current version.